Description

This domain check plugin allows checking if a domain name is available. Checking
if a domain name is available is a complex problem. New top level domains
emerge frequently. Static domain check codes get outdated very soon. This plugin
uses the Whois API to support the
latest top level domains correctly. By using the Whois API you also avoid
hitting any rate limits on the respective whois server.

Installation

Upload the domaincheck folder to the /wp-content/plugins/domaincheck directory,
or install the plugin through the WordPress plugins screen directly.